Weft-detecting mechanism



E. H. RYON.

WEFT DETECTING MECHANISM.

APPLICATION FILED MAY 1. 1919.

1 ,352, 5 36 Patented Sept. 14, 1920.

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WEFT DETECTING MECHANISM.

APPLICATION FILED MAY 1. 19m.

Patented Sept. 14, 1920.

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UNITED STATES PATENT OFFICE.

EPPA H. RYON, or WALTHAM, MASSACHUSETTS, As'srenon To CROMPTON a KNOWLES LQOM worms, or WORCESTER, MASSACHUSETTS, A CORPORA.

TION OF MASSACHUSETTS.

WEFT-DETECTING MECHANISM.

To all whom 2'15 may concern:

Be it known that I, EPPA H. RYoN, a citizen of the United States, residing at Waltham, in the county of Middlesex and State of Massachusetts, have invented a new and useful lVeft-Detecting Mechanism, of which the following is a specification.

This invention relates to Weft detecting mechanism of the general type shown in the prior patent to Compagnon, No. 1,291,415 issued Jan. 14, 1919, although operative upon a somewhat different principle.

It is the object of my invention to improve the details of construction and the design and disposition of elements in weft detecting mechanism of this type, to the end that a more effective weft detecting mechanism may result.

With this general object in view, an important feature of my invention relates to the provision of an improved slide in the form of a recessed or box-like casing within which the detecting mechanism proper is disposed. Another feature of my invention relates to improved means for adjusting the detecting mechanism, and to an improved arrangement of parts by which joints and bearings are largely eliminated.

My invention further relates to arrangements and combinationsof parts hereinafter described and more particularly pointed out in the appended claims.

A preferred form of my invention is shown in the drawings, in which- Figure 1 is a plan View of my improved detecting mechanism;

Fig. 2 is a side elevation thereof;

Fig. 3 is a vertical sectional view taken along the line 3-3 in Fig. 1, and

tain parts removed, and showing the operation of the device under different conditions.

My improved detecting mechanism can be used to advantage in connection with transfer indicating mechanism of the type shown in my prior Patent 'No. 972,772, dated Oct. 11, 1910.

In the drawings of this application I have shown merely an actuator 10 corresponding to the part 25 in said patent, and movable vertically in a slot 11 formed in a projection 12 on a casting 13 which in turn is rigidly secured to the loom frame. A short horizontal shaft 14 is pivoted in bearings 15 Specification of Letters Patent.

Figs. 4, 5 and 6 are plan views with cer- Patented Sept. 14, 1920.

Application filed m 1, 1919. Serial No. 298,886.

and 16 on the casting 13, and is provided with upwardly extending arms 17 and 18. A rod 19 is pivoted at one end to the arm 17 and 1s slidable transversely of the slot 11 previously described. When the rod 19 extends across the slot 11 and is engaged by the actuator 10, the latter is rendered effective to indicate weft exhaustion. A spring 7 20 normally moves the parts rearward or to the right as viewed in Figs. 1 and 2. The parts thus far described are of the usual type.

A stand 21 is pivoted at 22 to the casting 13 and rests upon an adjustable stop 23 which engages the under side thereof. A

forming part of the detector 27. The other end of the rod engages the arm 18 on the shaft 14. The spring 20 acting throu h the arm 18 and rod 29 tends to move the etector 27 to the position shown in Fig. 6.

Such action, however, is normally prevented by a relatively heavy coil spring 30 positioned in the cover 24 and engaging a bracket 31 secured to the upper surface of the slide or casing 25. A threaded stud 32 (Fig. 3) extends through the cover 24, the bracket 31, and the spring 30 and is provided with a shoulder 33 forming a stop for the bracket 31 and thus limiting rearward movement of the slide.

A second rod 34 is also slidably mounted in the casing 25 and is provided at its rear end with a hook-shaped portion 35 adapted to engage the rounded rear face of the projection 30 of the detector 27. The front end of the rod 34 supports an adjusting screw 36 adapted to engage the front side of the stand 21. A lug or projection 37 on the side of the rod 34 forms a convenient rear bearing for the rod 29, and it will be noted that the rods 29 and 34 engage the detector '27 at points substantially equally distant from the pivot 28. I

Having thus described my invention, I will biiefly describe the operation thereof.

' tion causes indication of transfer. If, however, the detectors 26 and 27 are engaged by a weft carrier having a sufiicient su ply of weft thereon, the roughened end 0 the detector 27 prevents angular movement vthereof, and the parts are forced backward as shown in Fig. 4, withdrawing the rod 19 from the slot 11.

When the weft carrier is substantially empty, the detector 27 which is commonly a little shorter than the fixed detector 26, will swing freely upon its pivot 28, thus permitting the fixed detector 26 to be moved back- Ward without corresponding movement of the end of the arm 30, whlch remains in its rearward position under the influence of the spring 20 and allows the rod 19 to render the actuator 10 operative. y

Having thus described my invention, it will be seen that I have provided a weft detecting mechanism having a greatly reduced number of joints and bearings, and

- having the working parts thereof assembled and protected within the'box-like casing 25. I have also provided convenient and accessible means of adjustment for all parts requiring adjustment, and have produced a detecting mechanism which is found reliable in operation and economical in-manufacture.

It will further be evident that changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of my invention as set forth in the claims, and I do not wish to be otherwise limited to the details herein disclosed, but What I claim is 1. In a loom, weft detecting mechanism comprising a stand, a box-like casing slidable on said stand, fixed and movable detectors mounted in the rear end of said casing and projecting therefrom, an adjustable stop rod slidable in said casing and engaging the rear side of a lateral projection on said movable detector and the front end of said stand, a yieldingly mounted member connected to indicate weft carrier exhaustion, and a second rod also slidable in said casing and having its opposite ends abutting said member and said movable detector respectively, said two rods engaging said movable detector at substantially equal distances from the pivot thereof whereby said second rod is normally positioned by said stop rod at its rearward limit of movement.

2. In a loom, weft'detecting mechanism comprising a stand, a box-like casing slidable in said stand, fixed and movable detectors mounted in the rear end of said casing and projecting therefrom, an adjustable stop rod slidable in said casing and engaging the rear side of a lateral projection on said movable detector and the front end of said stand, a yieldingly mounted member connected to indicate weft carrier exhaustion, and a second rod also slidable in said casing and having its opposite ends abutting said member and said movable detector respectively, said first rod being provided with a rear bearing for said second rod.

' 3. In a loom, a weft detecting mechanism comprising a stand, a recessed casing mounted to slide therein, a detector fixed thereto, a second detector pivoted thereto, a rod slidable within said casing and projecting through the front end thereof, said rod having a hook at the rear end and an EPPA H. RYONI 

